7242117545 has 32 divisors (see below), whose sum is σ = 9824855040. Its totient is φ = 5087704320.

The previous prime is 7242117527. The next prime is 7242117581. The reversal of 7242117545 is 5457112427.

It is a happy number.

It is not a de Polignac number, because 7242117545 - 2¹⁰ = 7242116521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7242117499 and 7242117508.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88427 + ... + 149343.

It is an arithmetic number, because the mean of its divisors is an integer number (307026720).

Almost surely, 2^7242117545 is an apocalyptic number.

It is an amenable number.

7242117545 is a deficient number, since it is larger than the sum of its proper divisors (2582737495).

7242117545 is a wasteful number, since it uses less digits than its factorization.

7242117545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61025.

The product of its digits is 78400, while the sum is 38.

The square root of 7242117545 is about 85100.6318719197. The cubic root of 7242117545 is about 1934.7366404168.

The spelling of 7242117545 in words is "seven billion, two hundred forty-two million, one hundred seventeen thousand, five hundred forty-five".